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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 546 · 40 questions
TalentJR

The fast method (Jump the point): Count the zeros: 10 → 1 jump, 100 → 2 jumps, 1000 → 3 jumps. × moves the point right; ÷ moves it left. Run out of digits? Fill the gaps with 0s. Drop 0s at the end of a decimal: 3.40 is 3.4.

NameDateTime takenScore ___ / 40
  1. 1.23.64 × 10 =
  2. 2.317.3 ÷ 1000 =
  3. 3.38.46 × 10 =
  4. 4.245.8 ÷ 100 =
  5. 5.153.1 ÷ 100 =
  6. 6.10.75 × 10 =
  7. 7.453.8 ÷ 10 =
  8. 8.21.99 × 10 =
  9. 9.474.1 ÷ 10 =
  10. 10.435.1 ÷ 10 =
  11. 11.46.65 × 1000 =
  12. 12.39.71 ÷ 1000 =
  13. 13.32.55 × 10 =
  14. 14.14.47 × 1000 =
  15. 15.347.1 ÷ 1000 =
  16. 16.12.4 × 10 =
  17. 17.17.78 ÷ 10 =
  18. 18.45.28 × 1000 =
  19. 19.42.41 × 1000 =
  20. 20.49.09 × 1000 =
  21. 21.32.19 ÷ 10 =
  22. 22.26.03 ÷ 10 =
  23. 23.42.21 ÷ 10 =
  24. 24.49.11 ÷ 1000 =
  25. 25.55.6 × 10 =
  26. 26.143.1 ÷ 10 =
  27. 27.33.92 ÷ 1000 =
  28. 28.42.09 × 100 =
  29. 29.30.89 ÷ 100 =
  30. 30.10.49 ÷ 10 =
  31. 31.38.75 × 1000 =
  32. 32.231.9 × 10 =
  33. 33.22.93 ÷ 10 =
  34. 34.163.4 ÷ 100 =
  35. 35.27.8 × 1000 =
  36. 36.319.8 ÷ 100 =
  37. 37.43.58 × 100 =
  38. 38.33.41 × 1000 =
  39. 39.191.6 ÷ 1000 =
  40. 40.140.3 × 100 =

Answer key

  1. 236.4
  2. 0.3173
  3. 384.6
  4. 2.458
  5. 1.531
  6. 107.5
  7. 45.38
  8. 219.9
  9. 47.41
  10. 43.51
  11. 46650
  12. 0.03971
  13. 325.5
  14. 14470
  15. 0.3471
  16. 124
  17. 1.778
  18. 45280
  19. 42410
  20. 49090
  21. 3.219
  22. 2.603
  23. 4.221
  24. 0.04911
  25. 556
  26. 14.31
  27. 0.03392
  28. 4209
  29. 0.3089
  30. 1.049
  31. 38750
  32. 2319
  33. 2.293
  34. 1.634
  35. 27800
  36. 3.198
  37. 4358
  38. 33410
  39. 0.1916
  40. 14030

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